Procedure for obtaining New Dyes For dyeing Cellulose Azu fre and Polyamide

摘要

Process for the production of Sulfur dyes. Indofenoles sulfide or indamimnas consists of General formula (i) through procedures of casting Foundry by Cooking or Baking. The reaction is carried out by heating to temperatures ranging from 220 to 260 C, in the presence of catalytic amounts of iodine.R1 is Hydrogen or Halogen; R2 is Hydrogen or alkyl with 1 to 8 Carbon Atoms; R3 and R4, independently, are Hydrogen, halogen or alkyl of 1 to 4 carbon Atoms.